Methane is a hydrocarbon fuel - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2020 - Paper 1
Question 4
Methane is a hydrocarbon fuel.
(i) Complete the word equation for the complete combustion of methane in oxygen.
methane + oxygen → water + carbon dioxide
(ii) The... show full transcript
Worked Solution & Example Answer:Methane is a hydrocarbon fuel - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2020 - Paper 1
Step 1
Complete the word equation for the complete combustion of methane in oxygen.
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Answer
The complete combustion of methane is represented by the equation:
ightarrow ext{water} + ext{carbon dioxide}$$
Step 2
Give the reason why carbon and carbon monoxide are produced in the incomplete combustion of methane.
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Answer
During incomplete combustion, there is a limited supply of oxygen, which prevents the methane from fully reacting. This lack of sufficient oxygen can lead to the formation of carbon (soot) and carbon monoxide instead of fully oxidizing to carbon dioxide.
Step 3
Name the fraction in Figure 7 that is used to surface roads.
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Answer
The fraction in Figure 7 that is used to surface roads is bitumen.
